750a3496d57e42b38101ea8d0d70e47e90d88455 - platform_frameworks_base

commit	750a3496d57e42b38101ea8d0d70e47e90d88455	[log] [tgz]
author	Robert Wu <robertwu@google.com>	Thu Feb 10 18:43:08 2022 +0000
committer	Robert Wu <robertwu@google.com>	Thu Feb 17 00:06:58 2022 +0000
tree	4968e642469cdd0be423cc368010345f1a029033
parent	4c6239b1564f123dac66600c8a63b509ba3bbcf5 [diff]

Rewrite MIDI 1.0 USB Host mode in Java

ALSA has multiple bugs related to MIDI 1.0. This CL removes
Android's dependency on ALSA for MIDI 1.0 USB Host mode. MIDI to
USB MIDI conversion is done in UsbMidiPacketConverter.java

ALSA is still used for peripheral mode.

Bug: 217392573
Test: Ran local unit tests with UsbMidiPacketConverter
Test: MidiScope/MidiKeyboard with multiple MIDI keyboards
Change-Id: I0b86f9bd26e4c9a50576f704deb6b53fc9a5c130

services/midi/java/com/android/server/midi/MidiService.java[diff]
services/usb/java/com/android/server/usb/UsbAlsaManager.java[diff]
services/usb/java/com/android/server/usb/UsbDirectMidiDevice.java[Renamed from services/usb/java/com/android/server/usb/UsbUniversalMidiDevice.java - diff]
services/usb/java/com/android/server/usb/UsbHostManager.java[diff]
services/usb/java/com/android/server/usb/UsbMidiPacketConverter.java[Added - diff]
services/usb/java/com/android/server/usb/descriptors/UsbDescriptorParser.java[diff]
services/usb/java/com/android/server/usb/descriptors/UsbInterfaceDescriptor.java[diff]

7 files changed